Gripper



Oct. 23, 1923. 1,471,448

C. W. BURROUGHS GRIPPER Filed June 1, 1922 HQ 5. F164.

INVENTOR CHARLES WESLEY BuEQouGHs.

ATTOQN EY.

iatenied Get. 23,1923.

CHARLES WESLEY ncnnonens,

OF MONTREAL, QUEBEC, CANADA.

;1 enrrrnn. v

Application filed June 1,

It has for its object, to provide a gripper.

that can be readily and securely attached to the lug or corner of a bag,at the end'of a tow line or hoisting rope.

A further object is to provide a gripper that can be instantly releasedwithout effort.

I am aware that various forms of gripping tongs are known and used, andthat those having rotating jaws arenot novel. I

My invention consists of a pair of parallel tongs with rotatingjaws'having faces of a novel form and construction.

Reference is made to the annexed drawings, in which Figure 1. is a sideview of thev 'ripper.

Figure 2. is a view of the edge of the gripper.

Flgure 3. is a view of one of the faces.

Figure 4. is a view of the opposite face.

Figure 5. is a cross sectional View of the opposed faces.

In the form shown in Figure 1. the levers 1.-1. are pivotedtogether at2. and also each lever is pivoted to one jaw arm 3. by the pins 4. i.Each jaw arm 3. has a slot 6. in which the pins 5. 5. in the levers1.1., travel, when the gripper is opened or closed. One of the levers 1.has a grooved pulley l2. journalled on a pin 11., while the other leverhas a terminal pin 10. to which the end of the rope 13. is secured.

To the ends of the jaw arms 3. 3. are 'pivotally attached the jaw faces7. and :8. These jaw faces are circular in form and are constructed withconcentric grooves 71. and 81. adapted to mesh when brought together, aswill appear by the view shown in Figure 5. The grooves of one face aremade slightly wider than the ridges of the other face, so that they meshfreely. j V 7 With such a construction, the gripper, when placed overthe lug or corner of a'bag,

1922. Serial No.1 565,202.

' and the rope is drawn taut,becomes securely attached. By means of the.rotation of the faces, the gripper at oncetakes a position.

7 in which the pull is direct, and owing to the.

matched concentric grooves thereis no possibilityof the bag slippingorbecoming loose.- 1 V The. gripper is instantly released by looseninthe tension of the rope and spreading the evers.

Owing to, the strong construction'of the gripper, it is capable ofwithstanding rough usage. a

The gripper can be operated by a toggle or other equivalent means, but Iprefer to use the rope and pulley as shown and described. v j

- Bags orcontainers, by means of this invention can be hauled or hoistedrapidly and 7 released where desired instantly. What I claim is 1. In agripper, the combination of a pair of parallel tongs, with jaws havingrotating gripping faces which are grooved concentrically, a tow rope andmeans to close the jaws bythe tension of the tow rope.

2. In a gripper, the combination of a pair of parallel tongs, with jawsbearing circular rotating gripping faces and concentric 'rooves therein,adapted to mesh to gether, a tow rope and means to close the jaws by thetension of the tow rope. I

3. In a gripper, the combination of a'pair of jaw arms having rotatinggripping faces, grooved concentrically with levers centrally pivotedtogether, each lever pivoted at one end to one jaw arm, and having a pinpassing through a slot at the end of the'opposite jaw arm, a ropesecured-to the-end of one lever, and a grooved pulley journalled at theend of the other lever.

etfIn a. gripper, a pair of rotating jaw faces adapted to operate inparallel, grooved concentrically to form male and female faces whichmesh together, having the grooves of one face wider than the ridges onthe other face. 7 1

5.' In a gripper, the combination of a tow

